How ro recover lost LUKS partition on external harddisk





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Using gnome-disk-utility, I accidentally removed a LUKS partition on an external hard disk. This hard disk now looks like this:



enter image description here



I just pressed the minus-sign, thus I guess I just removed the partition but not the data.



Following this documentation on help.ubuntu.com I used testdisk which only found the following:



http://www.cgsecurity.org
Disk /dev/sdg - 1000 GB / 931 GiB - CHS 121601 255 63
Partition Start End Size in sectors
>* Linux 0 1 1 0 254 63 16002
L HPFS - NTFS 114306 219 26 121601 80 59 117185452


Now I wonder, if this askubuntu answer could help me recovering my partition. But I have no idea what to enter precisely enter into sfdik



Any help is greatly appreciated as I am kind off desperate since I really need my data back...



Thanks!










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    2















    Using gnome-disk-utility, I accidentally removed a LUKS partition on an external hard disk. This hard disk now looks like this:



    enter image description here



    I just pressed the minus-sign, thus I guess I just removed the partition but not the data.



    Following this documentation on help.ubuntu.com I used testdisk which only found the following:



    http://www.cgsecurity.org
    Disk /dev/sdg - 1000 GB / 931 GiB - CHS 121601 255 63
    Partition Start End Size in sectors
    >* Linux 0 1 1 0 254 63 16002
    L HPFS - NTFS 114306 219 26 121601 80 59 117185452


    Now I wonder, if this askubuntu answer could help me recovering my partition. But I have no idea what to enter precisely enter into sfdik



    Any help is greatly appreciated as I am kind off desperate since I really need my data back...



    Thanks!










    share|improve this question







    New contributor




    mdthh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      2












      2








      2








      Using gnome-disk-utility, I accidentally removed a LUKS partition on an external hard disk. This hard disk now looks like this:



      enter image description here



      I just pressed the minus-sign, thus I guess I just removed the partition but not the data.



      Following this documentation on help.ubuntu.com I used testdisk which only found the following:



      http://www.cgsecurity.org
      Disk /dev/sdg - 1000 GB / 931 GiB - CHS 121601 255 63
      Partition Start End Size in sectors
      >* Linux 0 1 1 0 254 63 16002
      L HPFS - NTFS 114306 219 26 121601 80 59 117185452


      Now I wonder, if this askubuntu answer could help me recovering my partition. But I have no idea what to enter precisely enter into sfdik



      Any help is greatly appreciated as I am kind off desperate since I really need my data back...



      Thanks!










      share|improve this question







      New contributor




      mdthh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      Using gnome-disk-utility, I accidentally removed a LUKS partition on an external hard disk. This hard disk now looks like this:



      enter image description here



      I just pressed the minus-sign, thus I guess I just removed the partition but not the data.



      Following this documentation on help.ubuntu.com I used testdisk which only found the following:



      http://www.cgsecurity.org
      Disk /dev/sdg - 1000 GB / 931 GiB - CHS 121601 255 63
      Partition Start End Size in sectors
      >* Linux 0 1 1 0 254 63 16002
      L HPFS - NTFS 114306 219 26 121601 80 59 117185452


      Now I wonder, if this askubuntu answer could help me recovering my partition. But I have no idea what to enter precisely enter into sfdik



      Any help is greatly appreciated as I am kind off desperate since I really need my data back...



      Thanks!







      partitioning hard-drive data-recovery luks gnome-disk-utility






      share|improve this question







      New contributor




      mdthh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question







      New contributor




      mdthh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question






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      asked 14 hours ago









      mdthhmdthh

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          If the data is still there, you can look for the LUKS header.



          Fire up some hexadecimal editor (in read-only mode !). You better be sure how to use this editor so that not to make any modification.



          My recommendation is to use xxd on the command line, like



          sudo xxd /dev/sdg|less


          and look for LUKS string: in less type '/' then 'LUKS' then 'Enter'



          then if you find it, note down (on paper ?), the position of the L in LUKS.
          Note that the offset is in hexa. Convert it to decimal.



          If you have reach this point you have the start of your LUKS partition, now you need to find the end. You could use the start of sdg2 minus 1.



          Then go and use fdisk or sfidsk to recreate the partition only. Don't use parted or gparted that will reformat it!



          And you should be good.



          Edit:
          I made a python3 script to look that for you, if you are not familiar with cli.



          Either run



          sudo python3 search-for-luks-headers.py -l 16 /dev/sdg


          or make a copy of the first MB of /dev/sdg and use the script as a user on the copy.






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            If the data is still there, you can look for the LUKS header.



            Fire up some hexadecimal editor (in read-only mode !). You better be sure how to use this editor so that not to make any modification.



            My recommendation is to use xxd on the command line, like



            sudo xxd /dev/sdg|less


            and look for LUKS string: in less type '/' then 'LUKS' then 'Enter'



            then if you find it, note down (on paper ?), the position of the L in LUKS.
            Note that the offset is in hexa. Convert it to decimal.



            If you have reach this point you have the start of your LUKS partition, now you need to find the end. You could use the start of sdg2 minus 1.



            Then go and use fdisk or sfidsk to recreate the partition only. Don't use parted or gparted that will reformat it!



            And you should be good.



            Edit:
            I made a python3 script to look that for you, if you are not familiar with cli.



            Either run



            sudo python3 search-for-luks-headers.py -l 16 /dev/sdg


            or make a copy of the first MB of /dev/sdg and use the script as a user on the copy.






            share|improve this answer






























              0














              If the data is still there, you can look for the LUKS header.



              Fire up some hexadecimal editor (in read-only mode !). You better be sure how to use this editor so that not to make any modification.



              My recommendation is to use xxd on the command line, like



              sudo xxd /dev/sdg|less


              and look for LUKS string: in less type '/' then 'LUKS' then 'Enter'



              then if you find it, note down (on paper ?), the position of the L in LUKS.
              Note that the offset is in hexa. Convert it to decimal.



              If you have reach this point you have the start of your LUKS partition, now you need to find the end. You could use the start of sdg2 minus 1.



              Then go and use fdisk or sfidsk to recreate the partition only. Don't use parted or gparted that will reformat it!



              And you should be good.



              Edit:
              I made a python3 script to look that for you, if you are not familiar with cli.



              Either run



              sudo python3 search-for-luks-headers.py -l 16 /dev/sdg


              or make a copy of the first MB of /dev/sdg and use the script as a user on the copy.






              share|improve this answer




























                0












                0








                0







                If the data is still there, you can look for the LUKS header.



                Fire up some hexadecimal editor (in read-only mode !). You better be sure how to use this editor so that not to make any modification.



                My recommendation is to use xxd on the command line, like



                sudo xxd /dev/sdg|less


                and look for LUKS string: in less type '/' then 'LUKS' then 'Enter'



                then if you find it, note down (on paper ?), the position of the L in LUKS.
                Note that the offset is in hexa. Convert it to decimal.



                If you have reach this point you have the start of your LUKS partition, now you need to find the end. You could use the start of sdg2 minus 1.



                Then go and use fdisk or sfidsk to recreate the partition only. Don't use parted or gparted that will reformat it!



                And you should be good.



                Edit:
                I made a python3 script to look that for you, if you are not familiar with cli.



                Either run



                sudo python3 search-for-luks-headers.py -l 16 /dev/sdg


                or make a copy of the first MB of /dev/sdg and use the script as a user on the copy.






                share|improve this answer















                If the data is still there, you can look for the LUKS header.



                Fire up some hexadecimal editor (in read-only mode !). You better be sure how to use this editor so that not to make any modification.



                My recommendation is to use xxd on the command line, like



                sudo xxd /dev/sdg|less


                and look for LUKS string: in less type '/' then 'LUKS' then 'Enter'



                then if you find it, note down (on paper ?), the position of the L in LUKS.
                Note that the offset is in hexa. Convert it to decimal.



                If you have reach this point you have the start of your LUKS partition, now you need to find the end. You could use the start of sdg2 minus 1.



                Then go and use fdisk or sfidsk to recreate the partition only. Don't use parted or gparted that will reformat it!



                And you should be good.



                Edit:
                I made a python3 script to look that for you, if you are not familiar with cli.



                Either run



                sudo python3 search-for-luks-headers.py -l 16 /dev/sdg


                or make a copy of the first MB of /dev/sdg and use the script as a user on the copy.







                share|improve this answer














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                edited 4 hours ago

























                answered 14 hours ago









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